In patients with disorder of the shoulder joint, the the activities of daily Living (ADL), "reach a shelf over the head", "move to a medially rotated position" and "open and shut a sliding door", often become difficult. ADL of reach a shelf over the head needs the function of flexion and abduction of the shoulder joint. ADL of open and shut a sliding door needs the function of horizontal abduction and adduction with the same flexion angle of the shoulder joint. To understand the movement function of the shoulder joint, it is necessary to distinguish to it from the function of the shoulder girdle and the function of the gleno-humeral joint. We think that it helps the physical therapy approach (the evaluation, the cure) to shoulder joint disease to pay attention to movement while sitting or supine in order to understand the function of the shoulder girdle. Evaluating the function of the gleno-humeral joint and the rotator cuff function corresponding to the direction of the movement and the angle change must also be considered.